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def using_sqlite?
ActsAsTaggableOn::Utils.connection && ActsAsTaggableOn::Utils.connection.adapter_name == 'SQLite'
end
def supports_concurrency?
!using_sqlite?
end
def using_postgresql?
ActsAsTaggableOn::Utils.using_postgresql?
end
def postgresql_version
if using_postgresql?
ActsAsTaggableOn::Utils.connection.execute('SHOW SERVER_VERSION').first['server_version'].to_f
else
0.0
end
end
def postgresql_support_json?
postgresql_version >= 9.2
end
def using_mysql?
ActsAsTaggableOn::Utils.using_mysql?
end
def using_case_insensitive_collation?
using_mysql? && ActsAsTaggableOn::Utils.connection.collation =~ /_ci\Z/
end
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